A researcher is conducting an experiment to evaluate whether a treatment has a significant effect. If...
A researcher is conducting an experiment to evaluate whether a treatment has a significant effect. If the researcher uses a two-tailed test with α = .01, then the critical z-values are?
choose from the following:
A)z ± 2.33
B)z ±1.65
C)z ± 2.58
D)z ±1.96
Homework Answers
from the z table for two tailed test ,
the value at α = .01 i.e 99% is ± 2.58
so option c is the right choice
C)z = ± 2.58
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